阅读说明：本技术 一种预制装配式风电塔筒基础及装配方法 (Prefabricated assembly type wind power tower cylinder foundation and assembly method ) 是由 卢石望 张文静 于 2021-08-31 设计创作，主要内容包括：本发明涉及一种预制装配式风电塔筒基础及装配方法,特别涉及风力发电的技术领域,包括顶环和底环,所述顶环位于底环的上方,所述底环底面设置有多根基桩,所述底环底端内侧设置有底板,所述顶环、底环和底板之间形成内腔,所述顶环包括五等分的顶构件预制块,所述底环包括十等分的底构件预制块,所述底环底部设置槽口用于基桩顶部主筋伸入锚固,所述顶构件预制块之间的拼缝和底构件预制块之间的拼缝相互错开,所述底环与顶环之间采用可更换高强预应力锚栓进行连接,所述底板包括五等分的底部预制块,所述底部预制块中心设置有后浇带,所述底部预制块与底环之间设置有后浇带,所述底环底面设置有现浇垫层,本发明具有使得风电塔筒基础可采用工厂流水生产、运输简便、吊安高效和受力性能优良的技术效果。(The invention relates to a prefabricated wind power tower cylinder foundation and an assembly method, in particular to the technical field of wind power generation, which comprises a top ring and a bottom ring, wherein the top ring is positioned above the bottom ring, a plurality of foundation piles are arranged on the bottom surface of the bottom ring, a bottom plate is arranged on the inner side of the bottom end of the bottom ring, an inner cavity is formed among the top ring, the bottom ring and the bottom plate, the top ring comprises five equal parts of top member prefabricated blocks, the bottom ring comprises ten equal parts of bottom member prefabricated blocks, notches are arranged at the bottom of the bottom ring and are used for main reinforcements at the tops of the foundation piles to extend into anchors, the abutted seams among the top member prefabricated blocks and the abutted seams among the bottom member prefabricated blocks are staggered, the bottom ring and the top ring are connected by adopting replaceable high-strength prestress anchor bolts, the bottom plate comprises five equal parts of bottom prefabricated blocks, a rear pouring belt is arranged at the center of the bottom prefabricated blocks, and a rear pouring belt is arranged between the bottom prefabricated blocks and the bottom ring, the bottom ring bottom surface is provided with the cast-in-place cushion layer, and the invention has the technical effects that the wind power tower cylinder foundation can be produced by adopting factory flow, the transportation is simple and convenient, the hanging safety is high, and the stress performance is excellent.)

1. The utility model provides a prefabricated assembled wind power tower cylinder basis which characterized in that: comprises a top ring (1) and a bottom ring (2), wherein the top ring (1) is positioned above the bottom ring (2), a plurality of foundation piles (3) are arranged on the bottom surface of the bottom ring (2), a bottom plate (4) is arranged on the inner side of the bottom end of the bottom ring (2), an inner cavity (5) is formed among the top ring (1), the bottom ring (2) and the bottom plate (4), the top ring (1) comprises five equal parts of top member prefabricated blocks (11), the bottom ring (2) comprises ten equal parts of bottom member prefabricated blocks (21), the splicing seams between the top component precast blocks (11) and the splicing seams between the bottom component precast blocks (21) are staggered, the bottom plate (4) comprises five equally divided bottom precast blocks (41), a post-pouring center (411) is arranged at the center of each bottom precast block (41), a post-cast strip (412) is arranged between the bottom precast block and the bottom ring, and a cast-in-place cushion layer (6) is arranged on the bottom surface of the bottom ring (2).

2. The prefabricated assembled wind tower foundation of claim 1, wherein: and a replaceable high-strength prestressed anchor bolt (7) is connected between the top ring (1) and the bottom ring (2).

3. The prefabricated assembled wind tower foundation of claim 2, wherein: a first reserved grouting hole (111) is formed between adjacent top component precast blocks (11) of the top ring (1), and a second reserved grouting hole (211) is formed between adjacent bottom component precast blocks (21) of the bottom ring (2).

4. The prefabricated assembled wind tower foundation of claim 3, wherein: notch (22) are reserved to end ring (2) bottom surface, be provided with fine stone concrete pouring hole (23) between notch (22) and end ring (2) top surface, foundation pile (3) top surface is provided with many main muscle (31) that stretch into end ring (2).

5. The method for assembling a prefabricated assembled wind tower foundation according to claims 1 to 4, wherein:

s1, after the foundation pit is excavated to the designed elevation, constructing a cast-in-situ cushion layer (6) on site;

s2, arranging mortar at the corresponding position of the top of the cast-in-situ cushion layer (6), splicing the bottom precast block (41) into the inner cavity (5) to form the bottom plate (4), and pouring concrete in the post-pouring center (411) at the center of the bottom plate (4).

S3, hanging bottom member precast blocks (21), extending main reinforcements (31) at the tops of foundation piles (3) into notches (22) of bottom rings (2), splicing the bottom member precast blocks (21) into the bottom rings (2), pouring concrete into the inner spaces of the notches (22) from fine stone concrete pouring holes (23), and then performing grouting and water stopping in second reserved holes (211);

s4, pouring concrete in the post-cast strip (412) between the inner side of the bottom ring (2) and the bottom plate (4);

s5, setting grout on the top surface of the bottom ring (2), splicing the top member prefabricated blocks (11) into a top ring (1), enabling the splicing seams of the top ring (1) and the splicing seams of the bottom ring (2) to be staggered, and then grouting for stopping water in the first reserved grouting hole (111);

s6, connecting the top ring (1) and the bottom ring (2) into a whole by tensioning the replaceable high-strength prestressed anchor bolt (7).

Technical Field

The invention relates to the technical field of wind power generation, in particular to a prefabricated assembly type wind power tower cylinder foundation and an assembly method.

Background

The wind power energy is a clean energy which is pollution-free and renewable. The onshore wind power plant has high power generation amount, stable fan operation and mature construction technology, and is widely put into use in recent years.

The wind power tower belongs to a typical high-rise structure, the number of the newly-built wind power towers is more than 90 and 170 meters at present, the wind power tower foundation bears the operation of an upper fan and the load transmitted by the tower, and the main load is large overturning bending moment.

The wind power tower foundation has various forms at present, the shape of the foundation is mainly circular, and the diameter of the bottom surface is 15 to 22 meters. At present, cast-in-place reinforced concrete enlarged foundations are adopted, foundation piles are matched at weak foundations, the mode is formed on site according to local conditions and belongs to a mature process, all work needs to be finished at a machine position, the construction period is relatively long, field operation is inconvenient for quality management and safety control, the work difference control is poor, and wind power towers are generally implemented in a fully prefabricated assembly mode, so that the cast-in-place foundations are often an important control procedure for wind power construction.

Disclosure of Invention

The invention aims to provide a prefabricated wind power tower cylinder foundation and an assembling method, which have the good effects of industrial flow production, convenient mass transportation, quick hanging and safety, excellent mechanical property after assembling and forming and the like.

The above object of the present invention is achieved by the following technical solutions:

a prefabricated wind power tower cylinder foundation and an assembling method thereof comprise a top ring and a bottom ring, wherein the top ring is positioned above the bottom ring, a plurality of foundation piles are arranged on the bottom surface of the bottom ring, a bottom plate is arranged on the inner side of the bottom end of the bottom ring, an inner cavity is formed among the top ring, the bottom ring and the bottom plate, the top ring comprises five equal parts of top member prefabricated blocks, the bottom ring comprises ten equal parts of bottom member prefabricated blocks, notches are formed in the bottom of the bottom ring and used for allowing main bars at the tops of the foundation piles to extend into anchoring, splicing seams among the top member prefabricated blocks and splicing seams among the bottom member prefabricated blocks are staggered with each other, replaceable high-strength prestressed anchor bolts are adopted for connecting the bottom ring and the top ring, the cast-in-place bottom plate comprises five equal parts of bottom prefabricated blocks, a post-casting center is arranged in the center of the bottom prefabricated blocks, a post-casting belt is arranged between the bottom prefabricated blocks and the bottom ring, a cushion layer is arranged on the bottom surface of the bottom ring,

preferably, a replaceable high-strength prestressed anchor bolt is connected between the top ring and the bottom ring.

Preferably, a first reserved grouting hole is formed between adjacent top component precast blocks of the top ring, and a second reserved grouting hole is formed between adjacent bottom component precast blocks of the bottom ring.

Preferably, a notch is reserved in the bottom surface of the bottom ring, a fine stone concrete pouring hole is formed between the notch and the top surface of the bottom ring, and a plurality of main ribs extending into the bottom ring are arranged on the top surface of the foundation pile.

An assembly method of a prefabricated wind power tower base,

s1, after the foundation pit is excavated to the designed elevation, constructing a cast-in-situ cushion layer on site;

s2, arranging grout at the corresponding position of the top of the cast-in-situ cushion layer, splicing the bottom precast blocks into a bottom plate in the inner cavity, and pouring concrete in the post-pouring center at the center of the bottom plate.

S3, hanging the prefabricated blocks of the bottom component, extending the main reinforcement at the top of the foundation pile into the notch of the bottom ring, splicing the prefabricated blocks of the bottom component into the bottom ring, pouring concrete into the inner space of the notch from the fine stone concrete pouring hole, and then pouring grouting and stopping water in the second reserved hole;

s4, pouring concrete in the post-cast strip between the inner side of the bottom ring and the bottom plate;

s5, setting grout on the top surface of the bottom ring, splicing the prefabricated blocks of the top component into a top ring, enabling the splicing seams of the top ring and the splicing seams of the bottom ring to be staggered, and then grouting and stopping water in the first reserved grouting hole;

and S6, connecting the top ring and the bottom ring into a whole by tensioning the replaceable high-strength prestressed anchor bolt.

In conclusion, the invention has the beneficial effects that:

1. the top ring, the bottom ring and the bottom plate are separated, so that the weights of the single components are similar, and the hoisting operation of a factory and a site is facilitated;

2. the top ring, the bottom ring and the bottom plate are separated, so that the size of a single component is convenient for transportation operation in factories, roads and sites;

3. the dry joint is adopted as much as possible, and two post-pouring belts of the bottom plate are adopted, so that the bottom plate and the bottom ring can be integrally stressed better;

4. the top ring and the bottom ring are assembled in a staggered joint mode and are connected up and down through the tension prestressed anchor bolt, so that the top ring and the bottom ring can be conveniently integrated, and the upper load can be effectively borne and transmitted;

5. the top ring, the bottom plate and the cushion layer adopt mortar setting, so that the leveling is convenient and the water stopping is realized;

6. reserved grouting holes are adopted between the prefabricated components of the top ring and the bottom ring, and effective water stopping is carried out through post grouting;

7. generally, the splitting mode and the assembling method of the tower drum foundation are beneficial to guaranteeing the quality of the wind power tower drum foundation, greatly reduce the field construction operation time, and meet the requirements of field operation, dispersed operation and rapid assembling of wind power tower drum projects.

Drawings

FIG. 1 is a schematic longitudinal sectional view of the present invention;

FIG. 2 is a schematic top view of FIG. 1;

FIG. 3 is a schematic top view of the top ring of FIG. 1;

FIG. 4 is a schematic top view of the bottom ring of FIG. 1;

FIG. 5 is a schematic top view of the base plate of FIG. 1;

FIG. 6 is a schematic cross-sectional view of the bottom ring and foundation post of FIG. 1;

fig. 7 is a schematic bottom view of the prefabricated section of the bottom member of fig. 1.

The marks in the figure are respectively 1 and top ring; 11. a top member preform block; 111. a first reserved grouting hole; 2. a bottom ring; 21. a bottom member precast block; 211. a second reserved grouting hole; 22. a notch; 23. fine stone concrete pouring holes; 3. foundation piles; 31. a main rib; 4. a base plate; 41. a bottom precast block; 411. post-pouring the center; 412. post-pouring a belt; 5. an inner cavity; 6. a cushion layer; 7. high-strength prestressed anchor bolts can be replaced.

Detailed Description

In order to facilitate understanding of those skilled in the art, the present invention will be further described with reference to the following examples and drawings, which are not intended to limit the present invention. The present invention is described in detail below with reference to the attached drawings.

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1 to 7, a prefabricated wind power tower cylinder foundation comprises a top ring 1 and a bottom ring 2, wherein the top ring 1 is located above the bottom ring 2, a plurality of foundation piles 3 are arranged on the bottom surface of the bottom ring 2, a bottom plate 4 is arranged on the inner side of the bottom end of the bottom ring 2, an inner cavity 5 is formed among the top ring 1, the bottom ring 2 and the bottom plate 4, the top ring 1 comprises five equal top member prefabricated blocks 11, the bottom ring 2 comprises ten equal bottom member prefabricated blocks 21, the joints among the top member prefabricated blocks 11 and the joints among the bottom member prefabricated blocks 21 are staggered, the bottom plate 4 comprises five equal bottom prefabricated blocks 41, a post-casting center 411 is arranged in the center of each bottom prefabricated block 41, a post-casting belt 412 is arranged between each bottom prefabricated block and the bottom ring, and a cast-in-place cushion layer 6 is arranged on the bottom surface of the bottom ring 2.

The working principle is as follows: the top ring, the bottom ring and the bottom plate are separated, so that the weights of the single components are similar, and the hoisting operation of a factory and a site is facilitated; the top ring, the bottom ring and the bottom plate are separated, so that the size of a single component is convenient for transportation operation in factories, roads and sites; the dry joint is adopted as much as possible, and two post-pouring belts of the bottom plate are adopted, so that the bottom plate and the bottom ring can be integrally stressed better; the top ring and the bottom ring are assembled in a staggered joint mode, and loads are effectively borne and transmitted.

Be connected with removable high-strength prestressed anchor bolt 7 between top ring 1 and the foundation ring 2, adopt removable high-strength prestressed anchor bolt 7 to carry out effective connection to foundation ring 2 and top ring 1 for top ring 1 and foundation ring 2 link into one and effectively bear and transmit the whole of load.

Be provided with first reservation slip casting hole 111 between the adjacent top member prefabricated section 11 of top ring 1, be provided with second reservation slip casting hole 211 between the adjacent end member prefabricated section 21 of end ring 2, pour first reservation slip casting hole 111 after splicing top member prefabricated section 11, can make top member prefabricated section 11 concatenation gap possess good prevention of seepage performance, pour second reservation slip casting hole 211 after splicing end member prefabricated section 21, can make end member prefabricated section 21 concatenation gap possess good prevention of seepage performance to can effectively prevent outside water infiltration inner chamber 5.

Notch 22 is reserved to the bottom ring 2 bottom surface, be provided with fine stone concrete pouring hole 23 between notch 22 and the bottom ring 2 top surface, 3 top surfaces of foundation pile are provided with many main muscle 31 that stretch into bottom ring 2, adopt such structure can make the connection between foundation pile 3 and the bottom ring 2 more firm.

An assembling method of a prefabricated wind power tower barrel comprises the following steps:

s1, after the foundation pit is excavated to the designed elevation, constructing a cast-in-situ cushion layer 6 on site;

s2, arranging mortar at the corresponding position of the top of the cast-in-situ cushion layer 6, splicing the bottom precast blocks 41 in the inner cavity 5 into the bottom plate 4, and pouring concrete in the post-pouring strip 411 at the center of the bottom plate 4.

S3, hanging the bottom member precast block 21, extending the main reinforcement 31 at the top of the foundation pile 3 into the notch 22 of the bottom ring 2, splicing the bottom member precast block 21 into the bottom ring 2, pouring concrete into the inner space of the notch 22 from the fine stone concrete pouring hole 23, and then performing grouting and water stopping in the second preformed hole 211;

s4, pouring concrete in the post-pouring belt 412 between the inner side of the bottom ring 2 and the bottom plate 4;

s5, setting grout on the top surface of the bottom ring 2, splicing the top member prefabricated blocks 11 into the top ring 1, enabling the spliced seams of the top ring 1 and the spliced seams of the bottom ring 2 to be staggered, and then grouting and stopping water in the first reserved grouting hole 111;

and S6, connecting the top ring 1 and the bottom ring 2 into a whole by tensioning the replaceable high-strength prestressed anchor bolt 7.

The top ring, the bottom plate and the cushion layer adopt the mortar setting mode, so that the leveling is convenient, and the water stopping is realized.

Generally, the splitting mode and the assembling method of the tower drum foundation are beneficial to guaranteeing the quality of the wind power tower drum foundation, greatly reduce the field construction operation time, and meet the requirements of field operation, dispersed operation and rapid assembling of wind power tower drum projects.

Although the present invention has been described with reference to the above preferred embodiments, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.